import axios from 'axios'
import { MessageBox, Message } from 'element-ui'
import store from '@/store'
import { getToken } from '@/utils/auth'

// create an axios instance （创建一个axios实例）
const service = axios.create({
  baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
  // withCredentials: true, // send cookies when cross-domain requests
  timeout: 5000 // request timeout
})

// request interceptor （request拦截器）
service.interceptors.request.use(
  config => {
    // do something before request is sent （在请求发送之前做些什么）

    if (store.getters.token) {
      // let each request carry token （让每个请求携带令牌）
      // ['X-Token'] is a custom headers key  （['X-Token']是自定义标题键）
      // please modify it according to the actual situation
      config.headers['authorization'] = getToken()
    }
    return config
  },
  error => {
    // do something with request error
    console.log(error) // for debug
    return Promise.reject(error)
  }
)

// response interceptor （response拦截器）
service.interceptors.response.use(
  /**
   * If you want to get http information such as headers or status （如果您想要获取http信息，如头信息或状态信息）
   * Please return  response => response （请返回响应=>响应）
  */

  /**
   * Determine the request status by custom code（通过自定义代码确定请求状态）
   * Here is just an example （这只是一个例子）
   * You can also judge the status by HTTP Status Code （您还可以通过HTTP状态代码判断状态）
   */
  response => {
    const res = response.data
    // if the custom code is not 20000, it is judged as an error. （如果自定义代码不是20000，就会被判定为错误。）
    if (res.code !== 2000) {
      Message({
        message: res.message || 'Error',
        type: 'error',
        duration: 5 * 1000
      })

      // 50008: Illegal token; 50012: Other clients logged in; 50014: Token expired;
    //   if (res.code === 50008 || res.code === 50012 || res.code === 50014) {
    //     // to re-login
    //     MessageBox.confirm('You have been logged out, you can cancel to stay on this page, or log in again', 'Confirm logout', {
    //       confirmButtonText: 'Re-Login',
    //       cancelButtonText: 'Cancel',
    //       type: 'warning'
    //     }).then(() => {
    //       store.dispatch('user/resetToken').then(() => {
    //         location.reload()
    //       })
    //     })
    //   }
    //   return Promise.reject(new Error(res.message || 'Error'))
    } else {
      console.log(res)
      return res
    }
  },
  error => {
    console.log(error)
    // console.log('err' + error) // for debug
    Message({
      message: error.message,
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error)
  }
)

export default service
